| （単位：千ドル） | 自己株式の取得による支出 | 前年比（％） |
|---|---|---|
| 4Q21 | -26,000 | -252.9% |
| 3Q21 | 150,000 | - |
| 4Q20 | 17,000 | -92.9% |
| 3Q20 | 0 | -100.0% |
| 2Q20 | 0 | -100.0% |
| 1Q20 | 117,000 | -29.9% |
| 4Q19 | 241,000 | -13.3% |
| 3Q19 | 248,000 | -54.2% |
| 2Q19 | 179,000 | +45.5% |
| 1Q19 | 167,000 | +7.1% |
| 4Q18 | 278,000 | +40.4% |
| 3Q18 | 541,000 | +100.4% |
| 2Q18 | 123,000 | +38.2% |
| 1Q18 | 156,000 | +45.8% |
| 4Q17 | 198,000 | +195.5% |
| 3Q17 | 270,000 | - |
| 2Q17 | 89,000 | - |
| 1Q17 | 107,000 | - |
| 4Q16 | 67,000 | - |
| 4Q15 | 0 | -100.0% |
| 3Q15 | 123,000 | +3.4% |
| 2Q15 | 128,000 | +20.8% |
| 1Q15 | 197,000 | +51.5% |
| 4Q14 | 129,000 | +30.3% |
| 3Q14 | 119,000 | -39.9% |
| 2Q14 | 106,000 | -5.4% |
| 1Q14 | 130,000 | +100.0% |
| 4Q13 | 99,000 | +12.5% |
| 3Q13 | 198,000 | +144.4% |
| 2Q13 | 112,000 | - |
| 1Q13 | 65,000 | - |
| 4Q12 | 88,000 | - |
| 3Q12 | 81,000 | - |